Aschoff J
Z Tierpsychol. 1979 Mar;49(3):225-49. doi: 10.1111/j.1439-0310.1979.tb00290.x.
The article reviews most of the data available on the period tau of freerunning circadian rhythms, measured in constant conditions. Emphasis is placed on the effects of light intensity and ambient temperature on tau, with references to influences of other external as well as internal factors. In the introduction, examples are given of spontaneous and induced variations in tau and its dependence on the experimental history. The discussion concentrates largely on results obtained from arthropods and vertebrates.
本文回顾了在恒定条件下测量的自由运行昼夜节律周期τ的大部分现有数据。重点讨论了光照强度和环境温度对τ的影响，并提及了其他外部和内部因素的影响。在引言部分，给出了τ的自发和诱发变化的例子及其对实验历史的依赖性。讨论主要集中在节肢动物和脊椎动物的研究结果上。
